"Hear" is my buzzing sound
This seems to be more than coil whine...
A series of clicks, whirring, and buzzing would indicate coil whine...
This is a straight "buzzing" sound...I didn't notice any pause to indicate what is normally associated with it.
Not to mention, I would consider this deafening in a quiet environment...
I don't have to smash the phone to my cranium to hear it; partly the reason I decided to record it with my 6S Plus. Some forums speculate that people were using hi-def microphones to capture the sound. I recorded an "everyday" video that anyone with a 6S Plus would be able to duplicate if their phone was doing the same.